Theory of nonlinear optical spectroscopy of electron spin coherence in quantum dots

• Main Authors: Liu, Ren-Bao, Economou, S. E, Sham, L. J, Steel, D. G
• Format: Journal Article
• Language: English
• Published: 03-10-2006
• Subjects: Physics - Mesoscale and Nanoscale Physics
• DOI: 10.48550/arxiv.cond-mat/0610075

Physical Review B 75, 085322 (2007) We study in theory the generation and detection of electron spin coherence in
nonlinear optical spectroscopy of semiconductor quantum dots doped with single
electrons. In third-order differential transmission spectra, the inverse width
of the ultra-narrow peak at degenerate pump and probe frequencies gives the
spin relaxation time ($T_1$), and that of the Stoke and anti-Stoke spin
resonances gives the effective spin dephasing time due to the inhomogeneous
broadening ($T_2^*$). The spin dephasing time excluding the inhomogeneous
broadening effect ($T_2$) is measured by the inverse width of ultra-narrow
hole-burning resonances in fifth-order differential transmission spectra.